- binomial implementation (fixing broken build)

R=r OCL=18738 CL=18738

- binomial implementation (fixing broken build)
R=r OCL=18738 CL=18738
483e0315 · Robert Griesemer · 175dd773 · 483e0315
Commit 483e0315 authored Nov 07, 2008 by Robert Griesemer
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bignum.go src/lib/bignum.go +5 -0

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--- a/src/lib/bignum.go
+++ b/src/lib/bignum.go
@@ -841,6 +841,11 @@ export func Fact(n uint) *Natural {
 }


+export func Binomial(n, k uint) *Natural {
+	return MulRange(n-k+1, n).Div(MulRange(1, k));
+}
+
+
 func (x *Natural) Gcd(y *Natural) *Natural {
 	// Euclidean algorithm.
 	for !y.IsZero() {